Growth Responses to two Commercial Plant Growth Retardants with Different Concentration in Potted Geranium

Jeongmin Park, Yongheon Han, Jaeyo Sin, Jeonghyun Ahn, Wook Oh
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Abstract

Background and objective: The aim of this study was to elucidate the effect of varying treatment concentrations of two different plant growth retardants, acting at different inhibition positions during the biosynthetic process, on the growth characteristics of geranium (Pelargonium × hortorum) and then to provide essential data to improve the quality of pot plant production.Methods: Aqueous solutions of diniconazole (Binnari) and daminozide (B-9) at concentrations of 0 (distilled water), 50, 100, 200, and 400 mg⋅L-1 were prepared for the geranium 'Ringo 2000TM Deep Red'. These solutions were applied by foliar spraying twice at 10-day intervals. Growth characteristics such as plant height, leaf size and relative chlorophyll content (SPAD) were then assessed.Results: When Binnari was applied at concentrations of 0, 50, 100, 200, and 400 mg⋅L-1 , the corresponding plant heights were 29.5, 23.8, 24.1, 23.0, and 18.4 cm, respectively. There was a statistically significant decrease in plant height with increasing concentration. Conversely, for B-9, plant height was significantly reduced to 26.7 cm only at the 400 mg⋅L-1 concentration, indicating a less pronounced inhibitory effect compared to Binnari. Leaf width showed a significant decreasing trend with increasing Binnari application concentrations and was 4.6, 4.7, 4.1, 4.2, and 3.9 cm respectively. However, there was no significant difference due to the B-9 treatment. Chlorophyll content increased with increasing concentrations of both retardants.Conclusion: In conclusion, Binnari showed a greater inhibitory effect on geranium growth compared to B-9. The application of Binnari at 400 mg⋅L-1 resulted in the greatest increase in the ornamental value of the geranium. Furthermore, diniconazole acts during the early stage before the splitting of the GA1 and GA4 pathways, thus inhibiting the biosynthesis of both active gibberellins. In contrast, daminozide inhibits the step just before GA1 biosynthesis. It is concluded that GA4 serves as the dominant active gibberellin in geranium plants.
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两种不同浓度的商品植物生长抑制剂对盆栽天竺葵生长的影响
背景与目的:本研究的目的是阐明两种不同植物生长抑制剂在生物合成过程中作用于不同抑制位置的不同处理浓度对天竺葵(<i>Pelargonium</i>x <i>hortorum</i>),然后为提高盆栽植物生产质量提供必要的数据。方法:用浓度为0(蒸馏水)、50、100、200、400 mg·L<sup>-1</sup>的双康唑(Binnari)和氨基肼(B-9)水溶液;为天竺葵“Ringo 2000TM Deep Red”准备。这些溶液通过叶面喷施,每隔10天喷施两次。然后评估植株高度、叶片大小和相对叶绿素含量(SPAD)等生长特性。结果:Binnari以0、50、100、200、400 mg·L<sup>-1</sup>对应的株高分别为29.5、23.8、24.1、23.0和18.4 cm。随着浓度的增加,株高呈显著下降趋势。相反,B-9株高仅在400 mg·L<sup>-1</sup>浓度,表明与Binnari相比,其抑制作用不那么明显。叶片宽度随施用浓度的增加呈显著下降趋势,分别为4.6、4.7、4.1、4.2和3.9 cm。然而,由于B-9处理,没有显著差异。叶绿素含量随两种缓凝剂浓度的增加而增加。结论:与B-9相比,Binnari对天竺葵生长具有更大的抑制作用。Binnari在400 mg·L<sup>-1</sup>造成天竺葵观赏价值的最大增加。此外,二康唑在GA<sub>1</sub>和GA< sub> 4 & lt; / sub>途径,从而抑制活性赤霉素的生物合成。相反,daminozide抑制GA<sub>1</sub>生物合成。得出GA<sub>4</sub>是天竺葵植物中的显性活性赤霉素。
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来源期刊
Journal of People, Plants, and Environment
Journal of People, Plants, and Environment Social Sciences-Urban Studies
CiteScore
1.10
自引率
0.00%
发文量
42
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An Analysis of Care Farm Status as Basic Data for the Quality Management of Agro-Healing Facilities Growth Responses to two Commercial Plant Growth Retardants with Different Concentration in Potted Geranium Comparative Analysis of Future Landslide Susceptible Areas Based on Climate Change Scenario Applications Shoot Growth and Virus Elimination by Antiviral Agents in Node Cultures of Three Rose Cultivars A Phenomenological Study on Self-growth through the Experience of Horticultural Therapy by Welfare Horticultural Therapists
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